Tmax-SONETHERM

The high-temperature insulation that also takes care of noise emissions

Sound-absorbing

High resistance to temperature

High insulation value

High resistance to vibration

High mechanical strength

Oil, acid, and alkali resistant

Thermamax

Regulations for noise emissions are getting ever stricter – as are regulations on the sound characteristics of engines generally. We have succeeded in integrating both requirements in one product. Tmax-SONETHERM offers all the advantages of an integral insulation and can be used on all high-temperature insulation applications.

1. Increased surface area, less noise

Measures for noise absorption take up space. Up to now, the surface area of hot components in the exhaust line couldn’t be used due to the high temperatures present. However, we’ve now been able to transfer the principle of noise absorption to the actual thermal insulation, thereby using the surface areas of hot gas components such as turbochargers, catalytic converters, etc. The result is a significant reduction in noise emissions, without compromizing the thermal and mechanical properties of the integral insulation.

The acoustically optimized Tmax-Integral insulation consists of a hightemperature-resistant, shaped fiber element with an excellent noiseabsorbing capability, enclosed by a metallic outer shell. Combined with the water-resistant, high-temperature-insulating fiber material – Tmax-Dry-Tec – water absorption into the fiber is reduced and the insulation efficiency improved.

This is worth listening to

Just by application to a particle filter Tmax-SONETHERM can achieve a reduction in the sound pressure level of up to 3 dB A.*

Measurement of the sound pressure level of a diesel particle filter fitted with Tmax-SONETHERM compared to conventional direct insulation.* Measurements taken from a stationary diesel-engined passenger car.

From noise comes sound

By using various different materials, insulation thicknesses, and perforation configurations, sound pressure levels can be effectively reduced in the frequency range required. This flexibility means we can meet your particular acoustic requirements.

Acoustically optimized direct insulation can also be supplied in blanket form. This means that Tmax-SONETHERM is delivered as multiple removable shells with stainless steel foils, inner and outer, with an internal insulating material. As blankets of this type are generally screwed on, installation can be done by the customer on their production line.

All the advantages of integral insulation are retained: excellent thermal properties and application to every geometric shape needed. Noise absorption effectiveness using blankets can even exceed the normal integral insulation in certain frequency ranges.